Ex. 34: A disc is freely rotating about a vertical axis passing through its centre at the rate of 100 r.p.m. A blob of wax of mass 20 falls on the disc and sticks to it at a distance of 5 cm from gm the axis. If the moment of inertia of the disc about given axis is 2 x 10-4 kg m² find the new frequency of rotation of the disc.

Ex. 34: A disc is freely rotating about a vertical axis passing through its centre at the rate of 100 r.p.m. A blob of wax of mass 20 falls on the disc and sticks to it at a distance of 5 cm from gm the axis. If the moment of inertia of the disc about given axis is 2 x 10-4 kg m² find the new frequency of rotation of the disc.